Focusing electric-arc lamps



(No Model.) 3 Sheets-Sheet 1 L. G. WOOLLEY.

FOOUSING ELECTRIC ARC LAMP. i No. 313,039. Patented Feb. 24, 1885. 1

Fig.1

WITNESSES. 1.7V VENTOR.

(SW/5W 15 (No Model.) 3 Sheets-Sheet 2.

- L. G. WOOLLEY.

POGUSING ELECTRIC ARC LAMP.

No. 318,039. Patented Feb. 24, 1885.

WITNESSES.

6. M AWM.

D vw. t Duv e h S Y e e h S 3 B L L 0 O W G L FOOUSING ELECTRIC ARC LAMP. 313,039.- Patented Feb. 24, 1885.

Uivirnn STATES PATENT rricn.

LEONIDAS G. \VOOLLEY, OF INDIANAPOLIS, INDIANA, ASSIG-NOR TO THE OHIO POIVER AND LIGHT COMPANY, OF DAYTON, OHIO. I

FOCUSING ELECTRIC-ARC LAMPS.

SPECIFICATION farming part of Letters Patent 350. 313,039, dated February 24, 1885.

pplieation filed October 3, iSe3. (No model.)

To aZZ whom, it may concern.-

Be it known that I, LEONIDAS G. WooLLnY, of the city of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Means of F0- cusing the Reflectors of Electric Lamps, of which the following is a specification.

The object of my present invention is to pro vide a means of focusing the rellector of an electric head-light. It is well known by those familiar with electric lighting that some means of focusing the reflector is necessary, as the burning away of the stationary carbon constantly changes the relation of the light to the reflector, and even where both carbons are movable it is practically impossible to secure an unvarying position for the light, as the carbons commonly used cannot be depended on as being uniformly of the same quality or density. My said invention is therefore an important adjunct to an electric head-light or electric light having a reflector, while with a light wherein the point of illumination is stationary it would be of comparatively little value.

Said invention consists in mounting the refiector on slides, and combining therewith a gearing whereby the same may be raised or lowered,with a shaft running from said gear- 0 ing to or near where the operator is stationed,

as the cab ofa locomotive.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar 5 parts, Figure l is aside elevation of alocomoti ve to which my invention has been applied; Fig. 2, a top or plan view of the gearing as seen when looking downwardly from the dotted line z c; Fig. 3, a perspective view of so much of the lamp as illustrates my invention; and Fig. 4, a rear elevation of the-lamp with the case removed, showing the construction which lprefer to use. Fig. 5 represents a modification of my invention, showing the ap- 5 plication of adjusting mechanism to the lamp instead of the reflector.

In said drawings the portions marked A represent the supporting frame-work of the lamp,&o.; B, the reflector used with the variety of lamp shown; C, the pivoted fr'ame carrying the carbon; D, the weight; E, a pendulum attachment which I employ; F, a solenoid; G, a dash-pot; H H, the carbons; and IJ, shafts which, with the gear-wheels thereon, serve to raise and lower the reflector.

The several parts, except the reflector and gearing for operating the same, are not involved in my present invention, and will not therefore be further described herein.

The frame A serves to support the mechan- 6o ism of the lamp, and also to stay the slides B B,on which the reflector is mounted,and may be constructed in any suitable form.

The reflector B is an ordinary reflector, exceptin thematterofmounting. It isprovided with ears I). which extend out and surround the slides B B, as shown, and is thus adapted to move up and down on said slides. It is also provided with a downwardly-extending rack-bar, 13*, by which itis raised andlowered, as will be hereinafter described. Said rackbar should be located so as to be in line with the center ofgravity of the reflector, and thus enable said reflector to be moved more easily than would otherwise be the case.

The shaft I is atransverse shaft mounted in suitable hearings on the frai'ne-work. It has the spurgear I and the miter-gear I mounted thereon, the former of which engages with the rack-bar B on the reflector, and the latter of So which engages with a similar gear on the shaft J.

The shaft J extends from a bearing on the framework of the lamp back over the boiler toapoint-in the cab convenicntto the engineer. It has the miter-gear wheel J mountedthereon, which engages with the gear I on the shaft I, and at the endinside the cab a suitable handle by which it may be operated.

As will be readily understood, the reflector 0 can, by means of these shafts and gears, be readily and easily moved up and down on its slides B B, and thus focused as desired.

It will be readily understood that the reflector might be made stationary and the lamp 5 adjustable without varying the result; and I desire to be understood as claiming such an arrangement as the full mechanicalequivalent of that shown. Fig. 5 illustrates one mode of thus adjusting the lamp with respect to the reflector. The reflector B, instead of sliding upon the posts B B, is fastened thereto. The lamp-frameAis mounted upon a supplemental base-board, P, and is free to slide vertically upon the posts 13 B, which latter pass through eyes or bearings in the base I? and upper cross-piece of the supporting-frame A. The rack B with which the pinion I co-operates, is fastened to the base-board 1?. Hence when the pinion 1 is operated it will effect the vertical adjustment of the lamp-frame with respect to the reflector. thelatter being retained in proper position upon the posts B by setscrews or other suitable means.

Having thus fully described my said inven tion, what I claim as new, and desire to secure by Letters Patent, is

1'. The combination of an electric lamp, a reflector therefor, means for adjusting one in relation to the other to compensate for the changing position of the are, due to the burn ing away of the carbons, and a rod or shaft running to a position convenient to the operator, whereby the light can be focused,substantially as set forth.

2. In combination with the carbons of an arc lamp, an adjustable reflector, and means. substantially as described, whereby the relative position of the reflector with respect to the arc can be changed to compensate for the unequal consumption of the carbons and preserve the proper focal position, substantially as de- 35 scribed.

3. In combination with the carbons of an electric lamp, a focusing-reflector, and n1echanism for adjusting said reflector with rela tion to the are, substantially as described.

4. In combination with the reflector of a locomotive head-ligl1t,and with mechanism for adjusting the same with respect to the electric arc,a shaft extending back to the cab for actuating the adjusting mechanism, whereby the engineer is enabled to maintain the are at the proper focal position within the reflector, substantially as described.

5. In combination with the electric lamp located within the head-light and having its carbons projected within the reflector, the operating-shaft extending from the cab of the locomotive to the head-light, and intermediate mechanism for adjusting thereilector, substantially as described.

5. In combination with the electric lamp supported upon a fixed frame and within the head-light, the reflcctormounted to slide upon ways, and the adjusting mechanism operating upon the reflector and manipulated from the cab of the locomotive, substantially as, described.

7. In combination with the electric lamp, the reflector mounted to slide upon ways, the attached rack, and operating-g ars. all located within the head-light, and arranged to be operated from the cab of the locomotive, substantially as described.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 1st day of October. A. I). 1883.

LEONlDAS G. IVOOLLEY. [L s.]

In presence oi O. BRADFORD, CHAS. L. THURBER.

[SEAL] Gountersigned R. G. DYRENFORTH,

It is hereby certified that Letters Patent No. 313,039, granted February 24, 1885,

upon the application of Leonidas G. Woolley, of Indianapolis, Indiana, for an improve ment in Focusing Electric-Arc Lamps, was erroneously issued to The Ohio Power and Light Company, of Dayton, Ohio, as assignee; that said Letters Patent should have been issued to The American Electric Headlight Company, of same place; and that the proper correction has been made in the files and records pertaining to the case in the Patent Office, and should be read in the Letters Patent to make it conform thereto.

Signed, countersigned, and sealed this 10th day of March, A. D. 1885.

M. L. JOSLYN, Acting Secretary of the Interior.

Acting C(muniss-ioner of Patents. 

